def get_statistic(region, indicator):
    if region == "呼和浩特市":
        hohhot_data = {"总人口": 289.7}
        return hohhot_data.get(indicator, None)
    elif region == "包头市":
        baotou_data = {"GDP": 3000}
        return baotou_data.get(indicator, None)

    return None
